煤矿现代化
煤礦現代化
매광현대화
COAL MINE MODERNIZATION
2011年
4期
60-62
,共3页
上行开采%“横五区”与“竖三带”%判断方法%实例分析
上行開採%“橫五區”與“豎三帶”%判斷方法%實例分析
상행개채%“횡오구”여“수삼대”%판단방법%실례분석
superincumbent stratum%＂five horizontal area＂and＂three vertical band＂%methds of judgement%example analysis
在煤矿生产过程的某些条件下,采用上行开采,先采下部岩层或煤层作为解放层,使上下临近煤层卸压,瓦斯析出抽离煤层,可一定程度上减轻或消除煤层的煤与瓦斯突出危险。本文在煤层开采后上覆岩层的状态,即跨落带、裂隙带、弯曲下沉带三个区间和已建立的经典模型的基础上,提出判别上行开采可行性的方法依据和计算公式,主要有＂三带＂判别法、采动影响倍数法、围岩平衡分析法、数理统计分析法等。并通过伊马矿试采实例检验证明了这些方法的正确性,指出上行开采对高瓦斯矿井具有现实意义。
在煤礦生產過程的某些條件下,採用上行開採,先採下部巖層或煤層作為解放層,使上下臨近煤層卸壓,瓦斯析齣抽離煤層,可一定程度上減輕或消除煤層的煤與瓦斯突齣危險。本文在煤層開採後上覆巖層的狀態,即跨落帶、裂隙帶、彎麯下沉帶三箇區間和已建立的經典模型的基礎上,提齣判彆上行開採可行性的方法依據和計算公式,主要有＂三帶＂判彆法、採動影響倍數法、圍巖平衡分析法、數理統計分析法等。併通過伊馬礦試採實例檢驗證明瞭這些方法的正確性,指齣上行開採對高瓦斯礦井具有現實意義。
재매광생산과정적모사조건하,채용상행개채,선채하부암층혹매층작위해방층,사상하림근매층사압,와사석출추리매층,가일정정도상감경혹소제매층적매여와사돌출위험。본문재매층개채후상복암층적상태,즉과락대、렬극대、만곡하침대삼개구간화이건립적경전모형적기출상,제출판별상행개채가행성적방법의거화계산공식,주요유＂삼대＂판별법、채동영향배수법、위암평형분석법、수리통계분석법등。병통과이마광시채실례검험증명료저사방법적정학성,지출상행개채대고와사광정구유현실의의。
Under certain conditions in coal production, the use of upstream mining, the first rock or coal mining as the liberation of the lower layer, near the upper and lower coal unloading, coal seam gas precipitation detached, can reduce or eliminate seam of coal and gas outburst to some extent .On the basis of classical models and conditions of superincumbent stratum after mining,such as Cross-off zone, fracture zone, three intervals with bending subsidence ,we work out some methods and formulas to judge feasibility of up-mining ,included ＂three zones＂ criterion, multiple methods of mining, rock balancing analysis, statistical analysis and other mathematical.As a resault , Trial mining ore through the Ima test examples demonstrate the validity of these methods, noting that practical significance of high gas upward mining.
